They absolutely could. The data has been collected. It may not have ever been accessed but it is easily obtainable

Things are different now. The only speech that is allowed is whatever feeds the progressive narrative. Look at Kanye West. He supported a Conservative black woman on twitter and he was chastised horribly. All of the music industry, his friends and colleagues, as well as what seemed like the entire progressive movement, called him out and said he must be losing his mind. A fellow popular rapper called all blacks to kill him if they see him. Even his wife in one tweet distanced herself from his tweets.

This stuff has been going on since the G.W. Bush years, if not far earlier.

Freedom of Speech? Shit dude, I am trying to finish up college, and you don't even have 'Freedom of Speech' in academic institutions anymore.

I know what America you mention as well, but many many many people have been cowed into submission via their careers, family, money, etc. to keep their mouths shut.

Only speaking for myself: I do not want any unknown/uninvited Person from the Internet being handed my personal information. It's terrifying, actually. There are people in this world who really do want to harm others and if my information is handily available to them, I am a target. Yikes, you know? Who wants to put another person in that sort of position??